CN215370388U - Loader hydraulic tank pressurization system - Google Patents
Loader hydraulic tank pressurization system Download PDFInfo
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- CN215370388U CN215370388U CN202120818209.4U CN202120818209U CN215370388U CN 215370388 U CN215370388 U CN 215370388U CN 202120818209 U CN202120818209 U CN 202120818209U CN 215370388 U CN215370388 U CN 215370388U
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Abstract
The utility model discloses a loader hydraulic oil tank pressurization system which comprises an original whole vehicle air brake system, an air compressor and an air dryer, wherein the air dryer is connected with a three-way joint, the three-way joint is connected to the original whole vehicle air brake system, and a third interface of the three-way joint is connected with an inlet of an inflation one-way valve; the outlet of the inflation one-way valve is connected with the inlet of the air tank through a pipeline, and the outlet of the air tank is connected with an air pressure reducing valve; the outlet of the air reducing valve is connected with the inlet of the check one-way valve, and the outlet of the check one-way valve is connected to one of the interfaces of the four-way connector; a second interface of the four-way joint is provided with a manual pressure relief bolt, a third interface of the four-way joint is connected with a hydraulic oil tank through a pipeline, and a fourth interface of the four-way joint is provided with an oil tank pressure protection valve; the utility model keeps the positive pressure of the gas at the top of the oil tank all the time on the premise of not changing the arrangement of the original hydraulic oil tank of the whole vehicle, and solves the problem of plunger pump air suction.
Description
Technical Field
The utility model belongs to the technical field of loader hydraulic systems, and particularly relates to a loader hydraulic oil tank pressurization system.
Background
With the acceleration of national infrastructure construction and the increasingly strict requirements on energy conservation and emission reduction technologies, the high-pressure variable plunger pump is more and more widely used in loader products. The plunger pump has the problem of poor self-absorption capability, so that the minimum pressure of an oil pumping opening of the plunger pump must be ensured to avoid cavitation caused by pumping air out of the plunger pump. Most producers change the side-mounted oil tank into the backpack oil tank in order to improve the plunger pump suction problem, namely place hydraulic tank at the plunger pump top, utilize the pressure that hydraulic fluid self gravity produced to improve the plunger pump suction opening pressure, this kind of scheme need arrange whole car and carry out modification by a wide margin, waste time and energy, and the effect to improving plunger pump suction opening pressure is limited moreover.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a novel loader hydraulic oil tank pressurization system on the premise of not changing the arrangement of the original whole vehicle hydraulic oil tank, so that the gas at the top of the oil tank always keeps positive pressure, and the problem of plunger pump air suction is solved.
The utility model is realized in this way, a loader hydraulic oil tank pressurization system, including the original vehicle air brake system, connect the air compressor of the engine, characterized by that, the said air compressor connects the air dryer through the pipeline, the outlet end of the air dryer connects one of the interfaces of the three-way connection through the pipeline, another interface of the three-way connection connects to the original vehicle air brake system through the pipeline, the third interface of the three-way connection connects to the entrance to the charging check valve through the pipeline; the outlet of the inflation one-way valve is connected with the inlet of the air tank through a pipeline, and the outlet of the air tank is connected with the air pressure reducing valve through a pipeline; an outlet of the air reducing valve is connected with an inlet of a check one-way valve through a pipeline, and an outlet of the check one-way valve is connected to one of the interfaces of the four-way joint; the second interface of the four-way joint is provided with a manual pressure relief bolt, the third interface of the four-way joint is connected with a hydraulic oil tank through a pipeline, and the fourth interface of the four-way joint is provided with an oil tank pressure protection valve.
Preferably, an air pressure overload valve is installed on the air tank.
The utility model has the advantages and technical effects that: due to the adoption of the technical scheme, the utility model has the following advantages:
1. the hydraulic oil tank arrangement of the whole vehicle is not changed, the convenient and fast modification can be carried out on the original vehicle, and the rapid development of products is facilitated.
2. The oil tank is closed structure, and the oil tank admits air and only comes from the pure air through air dryer filter drying, does not have gas exchange with other surrounding environment, can effectively guarantee the cleanliness of hydraulic oil, improves system and hydraulic component practical life.
3. The utility model does not additionally increase a high-pressure air source, and fully utilizes the original air compressor and the air dryer of the vehicle.
4. After the whole vehicle is started, the pre-pressure can be quickly established at the top of the oil tank, and the positive pressure of sufficient gas at the top of the oil tank is always ensured no matter the whole vehicle is in any working condition during working, so that the suction phenomenon of a plunger pump is completely avoided.
Drawings
Fig. 1 is a control schematic of the present invention.
In the figure, 1, an original vehicle pneumatic braking system; 2. an air compressor; 3. an air dryer; 4. a three-way joint; 5. an inflation check valve; 6. an air tank; 7. an air relief valve; 8. a check one-way valve; 9. a four-way joint; 10. a manual pressure relief plug; 11. a hydraulic oil tank; 12. a tank pressure protection valve; 13. an air pressure overload valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1, a loader hydraulic oil tank pressurization system comprises an original vehicle air brake system 1 and an air compressor 2 connected with an engine, wherein the air compressor is connected with an air dryer 3 through a pipeline, the outlet end of the air dryer 3 is connected with one interface of a three-way joint 4 through a pipeline, the other interface of the three-way joint is connected with the original vehicle air brake system 1 through a pipeline, and the third interface of the three-way joint is connected with the inlet of an inflation check valve 5 through a pipeline; the outlet of the inflation one-way valve 5 is connected with the inlet of an air tank 6 through a pipeline, and the outlet of the air tank is connected with an air pressure reducing valve 7 through a pipeline; an outlet of the air reducing valve 7 is connected with an inlet of a check one-way valve 8 through a pipeline, and an outlet of the check one-way valve 8 is connected to one interface of a four-way joint 9; a manual pressure relief bolt 10 is installed on a second interface of the four-way joint 9, a third interface 9 of the four-way joint 9 is connected with a hydraulic oil tank 11 through a pipeline, and an oil tank pressure protection valve 12 is installed on a fourth interface of the four-way joint 9.
In order to ensure that the air tank operates within a safe pressure range, an air pressure overload valve 13 is mounted on the air tank.
By adopting the technical scheme, the utility model has the following advantages:
1. the hydraulic oil tank arrangement of the whole vehicle is not changed, the convenient and fast modification can be carried out on the original vehicle, and the rapid development of products is facilitated.
2. The oil tank is closed structure, and the oil tank admits air and only comes from the pure air through air dryer filter drying, does not have gas exchange with other surrounding environment, can effectively guarantee the cleanliness of hydraulic oil, improves system and hydraulic component practical life.
3. The utility model does not additionally increase a high-pressure air source, and fully utilizes the original air compressor and the air dryer of the vehicle.
4. After the whole vehicle is started, the pre-pressure can be quickly established at the top of the oil tank, and the positive pressure of sufficient gas at the top of the oil tank is always ensured no matter the whole vehicle is in any working condition during working, so that the suction phenomenon of a plunger pump is completely avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (2)
1. A loader hydraulic oil tank pressurization system comprises an original whole vehicle air brake system and an air compressor connected with an engine, and is characterized in that the air compressor is connected with an air dryer through a pipeline, the outlet end of the air dryer is connected with one interface of a three-way joint through a pipeline, the other interface of the three-way joint is connected with the original whole vehicle air brake system through a pipeline, and a third interface of the three-way joint is connected with an inlet of an inflation one-way valve through a pipeline; the outlet of the inflation one-way valve is connected with the inlet of the air tank through a pipeline, and the outlet of the air tank is connected with the air pressure reducing valve through a pipeline; an outlet of the air reducing valve is connected with an inlet of a check one-way valve through a pipeline, and an outlet of the check one-way valve is connected to one of the interfaces of the four-way joint; the second interface of the four-way joint is provided with a manual pressure relief bolt, the third interface of the four-way joint is connected with a hydraulic oil tank through a pipeline, and the fourth interface of the four-way joint is provided with an oil tank pressure protection valve.
2. The loader hydraulic tank pressurization system according to claim 1, characterized in that: and an air pressure overload valve is arranged on the air tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120818209.4U CN215370388U (en) | 2021-04-20 | 2021-04-20 | Loader hydraulic tank pressurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120818209.4U CN215370388U (en) | 2021-04-20 | 2021-04-20 | Loader hydraulic tank pressurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215370388U true CN215370388U (en) | 2021-12-31 |
Family
ID=79627538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120818209.4U Active CN215370388U (en) | 2021-04-20 | 2021-04-20 | Loader hydraulic tank pressurization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215370388U (en) |
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2021
- 2021-04-20 CN CN202120818209.4U patent/CN215370388U/en active Active
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